.module-nav[data-astro-cid-ail74xst]{margin-top:3rem;display:grid;grid-template-columns:1fr 1fr;align-items:stretch;gap:1rem}.module-nav-card[data-astro-cid-ail74xst]{display:flex;flex-direction:column;justify-content:center;gap:.3rem;padding:1.25rem;border:1px solid var(--color-border);border-radius:10px;text-decoration:none;color:inherit;transition:border-color .15s}.module-nav-card[data-astro-cid-ail74xst]:hover{border-color:var(--color-primary)}.module-nav-card--locked[data-astro-cid-ail74xst]{opacity:.6;cursor:default}.module-nav-card--locked[data-astro-cid-ail74xst]:hover{border-color:var(--color-border)}.module-nav-label[data-astro-cid-ail74xst]{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-primary)}.module-nav-title[data-astro-cid-ail74xst]{font-size:.95rem;font-weight:600;line-height:1.3;overflow-wrap:break-word;word-break:break-word;min-width:0}.module-nav-meta[data-astro-cid-ail74xst]{font-size:.8rem;color:var(--color-text-muted)}@media(max-width:1199px){.module-nav[data-astro-cid-ail74xst]{margin-bottom:5rem}}@media(max-width:600px){.module-nav[data-astro-cid-ail74xst]{grid-template-columns:1fr;gap:.75rem}.module-nav-card[data-astro-cid-ail74xst]{padding:.95rem 1rem}.module-nav-title[data-astro-cid-ail74xst]{font-size:.9rem}}.module-cta-alt[data-astro-cid-ail74xst]{font-size:.85rem;margin-top:.75rem}.module-cta-alt[data-astro-cid-ail74xst] a[data-astro-cid-ail74xst]{color:var(--color-text-muted);text-decoration:underline}.toc--preview[data-astro-cid-ail74xst] span[data-astro-cid-ail74xst]{color:var(--color-text-muted)}.module-content--preview[data-astro-cid-ail74xst]{max-height:800px;overflow:hidden;position:relative}.module-content--preview[data-astro-cid-ail74xst]:after{content:"";position:absolute;bottom:0;left:0;right:0;height:200px;background:linear-gradient(to bottom,transparent,var(--color-bg, #fff));pointer-events:none}.preview-paywall[data-astro-cid-ail74xst]{text-align:center;padding:2rem 1.5rem 3rem;margin-top:-1rem}.preview-paywall-inner[data-astro-cid-ail74xst]{max-width:480px;margin:0 auto}.preview-paywall-title[data-astro-cid-ail74xst]{font-size:1.4rem;font-weight:700;margin-bottom:.75rem}.preview-paywall-text[data-astro-cid-ail74xst]{color:var(--color-text-muted);margin-bottom:1.5rem;line-height:1.6}.module-content[data-astro-cid-ail74xst] .branch-section{margin:1.5rem 0;border:1px solid var(--color-border);border-left:3px solid var(--color-primary);border-radius:8px;background:#fff;overflow:hidden}.module-content[data-astro-cid-ail74xst] .branch-summary{cursor:pointer;padding:1rem 1.25rem;display:flex;align-items:center;gap:.9rem;list-style:none;user-select:none;background:#f5f8ff;transition:background-color .15s}.module-content[data-astro-cid-ail74xst] .branch-summary:hover{background:#e8f0fe}.module-content[data-astro-cid-ail74xst] .branch-summary::-webkit-details-marker{display:none}.module-content[data-astro-cid-ail74xst] .branch-summary:before{content:"+";display:inline-block;width:24px;height:24px;border-radius:50%;background:var(--color-primary);color:#fff;font-size:18px;font-weight:400;line-height:22px;text-align:center;flex-shrink:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif}.module-content[data-astro-cid-ail74xst] .branch-section[open]>.branch-summary:before{content:"−";line-height:21px}.module-content[data-astro-cid-ail74xst] .branch-summary h2,.module-content[data-astro-cid-ail74xst] .branch-summary h3{margin:0!important;padding:0!important;font-size:1.05rem!important;font-weight:600;border:none!important;flex-grow:1;color:var(--color-text)}.module-content[data-astro-cid-ail74xst] .branch-hint{font-size:.78rem;color:var(--color-primary);font-weight:600;text-transform:uppercase;letter-spacing:.05em;flex-shrink:0;padding:.3rem .7rem;border:1px solid var(--color-primary);border-radius:999px;background:#fff}.module-content[data-astro-cid-ail74xst] .branch-section[open]>.branch-summary{background:#fff;border-bottom:1px solid var(--color-border)}.module-content[data-astro-cid-ail74xst] .branch-section[open]>.branch-summary .branch-hint{display:none}.module-content[data-astro-cid-ail74xst] .branch-summary .heading-anchor{display:none}.module-content[data-astro-cid-ail74xst] .branch-section>:not(.branch-summary){margin-left:1.75rem;margin-right:1.75rem}.module-content[data-astro-cid-ail74xst] .branch-section>:not(.branch-summary):first-of-type{margin-top:1.25rem}.module-content[data-astro-cid-ail74xst] .branch-section>:not(.branch-summary):last-child{margin-bottom:1.25rem}@media(max-width:600px){.module-content[data-astro-cid-ail74xst] .branch-section>:not(.branch-summary){margin-left:.9rem;margin-right:.9rem}.module-content[data-astro-cid-ail74xst] .branch-summary{padding:.85rem 1rem;gap:.65rem;flex-wrap:wrap}.module-content[data-astro-cid-ail74xst] .branch-summary h2,.module-content[data-astro-cid-ail74xst] .branch-summary h3{font-size:1rem!important}.module-content[data-astro-cid-ail74xst] .branch-hint{font-size:.68rem;padding:.2rem .55rem;letter-spacing:.04em}}.module-content[data-astro-cid-ail74xst] .kc-card{margin-top:2rem;padding:1.5rem;border-radius:10px;background:#f0f7ff;border:1px solid #d0e3f7}.module-content[data-astro-cid-ail74xst] .kc-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}.module-content[data-astro-cid-ail74xst] .kc-icon{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--color-primary);color:#fff;font-size:14px;font-weight:700;flex-shrink:0;font-family:inherit}.module-content[data-astro-cid-ail74xst] .kc-label{font-size:.82rem;font-weight:600;color:var(--color-primary);letter-spacing:.02em;margin:0}.module-content[data-astro-cid-ail74xst] .kc-question{font-size:.95rem;font-weight:600;line-height:1.5;margin-bottom:.85rem;color:var(--color-text)}.module-content[data-astro-cid-ail74xst] .kc-options{display:flex;flex-direction:column;gap:.5rem}.module-content[data-astro-cid-ail74xst] .kc-option{appearance:none;background:#fff;border:1.5px solid #d0e3f7;border-radius:8px;padding:.65rem .85rem;font-size:.9rem;line-height:1.45;color:var(--color-text);cursor:pointer;text-align:left;font-family:inherit;transition:border-color .15s,background-color .15s,box-shadow .15s;display:flex;align-items:flex-start;gap:.65rem}.module-content[data-astro-cid-ail74xst] .kc-option:hover{border-color:var(--color-primary);background:#fff;box-shadow:0 1px 4px #0066cc1a}.module-content[data-astro-cid-ail74xst] .kc-letter{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:#e8f0fe;color:var(--color-primary);font-size:.78rem;font-weight:700;flex-shrink:0;transition:background-color .15s,color .15s}.module-content[data-astro-cid-ail74xst] .kc-option:hover .kc-letter{background:var(--color-primary);color:#fff}.module-content[data-astro-cid-ail74xst] .kc-option-text{padding-top:2px}.module-content[data-astro-cid-ail74xst] .kc-answered .kc-option{cursor:default;pointer-events:none}.module-content[data-astro-cid-ail74xst] .kc-answered .kc-option:not(.kc-correct):not(.kc-incorrect){opacity:.45;border-color:#d0e3f7;background:#f8fafc}.module-content[data-astro-cid-ail74xst] .kc-answered .kc-option:not(.kc-correct):not(.kc-incorrect) .kc-letter{background:#e8e8e8;color:#999}.module-content[data-astro-cid-ail74xst] .kc-option.kc-correct{border-color:#15803d;background:#f0fdf4}.module-content[data-astro-cid-ail74xst] .kc-option.kc-correct .kc-letter{background:#15803d;color:#fff}.module-content[data-astro-cid-ail74xst] .kc-option.kc-incorrect{border-color:#dc2626;background:#fef2f2}.module-content[data-astro-cid-ail74xst] .kc-option.kc-incorrect .kc-letter{background:#dc2626;color:#fff}.module-content[data-astro-cid-ail74xst] .kc-explanation{display:none;margin-top:.85rem;padding:.75rem 1rem;border-radius:8px;background:#fff;border-left:3px solid #15803d;font-size:.88rem;line-height:1.55;color:var(--color-text)}.module-content[data-astro-cid-ail74xst] .kc-explanation--visible{display:block}@media(max-width:600px){.module-content[data-astro-cid-ail74xst] .kc-card{padding:1.25rem 1rem}.module-content[data-astro-cid-ail74xst] .kc-option{padding:.6rem .75rem;font-size:.85rem;gap:.5rem}.module-content[data-astro-cid-ail74xst] .kc-question{font-size:.9rem}.module-content[data-astro-cid-ail74xst] .kc-letter{width:22px;height:22px;font-size:.72rem}}.module-content[data-astro-cid-ail74xst] .regional-tabs{margin:1.5rem 0}.module-content[data-astro-cid-ail74xst] .regional-tabs-bar{display:flex;flex-wrap:wrap;gap:.25rem;border-bottom:1px solid var(--color-border);margin-bottom:1.25rem}.module-content[data-astro-cid-ail74xst] .regional-tab-button{appearance:none;background:transparent;border:none;border-bottom:2px solid transparent;border-radius:6px 6px 0 0;padding:.65rem 1rem;margin-bottom:-1px;font-size:.9rem;font-weight:600;color:var(--color-text-muted);cursor:pointer;transition:color .15s,border-color .15s,background-color .15s;font-family:inherit}.module-content[data-astro-cid-ail74xst] .regional-tab-button:hover{color:var(--color-text);background:#f5f8ff}.module-content[data-astro-cid-ail74xst] .regional-tab-button.active:hover{background:#e8f0fe}.module-content[data-astro-cid-ail74xst] .regional-tab-button.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.module-content[data-astro-cid-ail74xst] .regional-tab-panel{display:none}.module-content[data-astro-cid-ail74xst] .regional-tab-panel.active{display:block}.module-content[data-astro-cid-ail74xst] .regional-tab-panel>*:first-child{margin-top:0}@media(max-width:600px){.module-content[data-astro-cid-ail74xst] .regional-tabs-bar{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.module-content[data-astro-cid-ail74xst] .regional-tabs-bar::-webkit-scrollbar{display:none}.module-content[data-astro-cid-ail74xst] .regional-tab-button{padding:.55rem .75rem;font-size:.85rem;white-space:nowrap;flex-shrink:0}}